whipplb



' (No Model.)

H. J. P. WHIPPLE.

KNOB ATTACHMENT. I Patented July '7, 1885.

NITED STATES HENRY J. P. WVHIPPLE,

\VHIPPLE, OF SAME PLACE.

KNOB ATTACH MENT.

SPECIPIGATION forming part of Letters Patent No. 321,927, dated July 7, 1885.

Application filed July 18, 1884. (No model.)

To all whom it may concern.-

Be it known that I, HENRY J. P. WHIPPLE, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented a new Improvement in Attaching Door-Knobs to Spindles; and I do hereby declare the following, when taken in connection with accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a longitudinal section through the sleeve and locking-collar, showing a side view of the spindle, the knob, and its shank, with the spring thereon, the parts being in the condition of locking the knob to the spindle; Fig. 2, a longitudinal central section of the same; Fig. 8, a transverse section between the knob and locking-collar on line :0 00, looking toward the collar; Fig. 4, atransverse section on line y y,- Fig. 5, a perspective View of the sleeve, a part broken away for betterillustration; Fig. 6, a longitudinal section of the locking-collar, looking toward the rib which engages the slot in the sleeve.

This invention relates to an improvement in devices for connecting door-knobs to the spindle, whereby they may be adjusted to varying thicknesses of doors, the object being to make the connection positive, and of such a character that there is no liability of the adjustable knob becoming disengaged from the spindle, and the invention consists in the construction as hereinafter described, and more particularly recited in the claim.

A represents the spindle, which is of the usual rectangular or polygonal shape. To one end the knob 13 is secured in the usual manner, and so as to become what is called the fixed knob. The other end of the spindle is screw-threaded, as at O.

D is a sleeve having an opening, a, longitudinally through it corresponding to the square or angular shape of the spindle, and so as to slide freely thereon, the opening at one end enlarged to form a concentric recess, 0.

E represents the adjustable knob. Instead of being constructed with the usual neck to slide onto the spindle, it is provided with a shank, F, internally screw-threaded, as at I),

to fit the screw-threaded portion O of the spindle. This shank is constructed to enter the corresponding recess, c, in the end of the sleeve D, but so as to leave a space between the shank of the knob and the inner surface of the recess in the sleeve. On the shank of the knob is a collar, H, arranged to slide on the shank, but with a concentric recess in its rear or inner end, to permit it to slide over the outer end of the sleeve D, the bottom 6 of the recess forming an internal shoulder around the shank of the knob. At the extreme inner end of the shank of the knob a bearing, f, is provided around the shank of the knob. Between the bearing f and the shoulder e of the collar H a helical spring, I, is introduced, one end resting against the bearing f and the other against the shoulder e in the collar, the tendency of the spring being to force and hold the collar up against the knob, as seen in Figs. 1 and 2. Upon the face of the collar next the knob one or more notches, 71, are made, here represented as two, (see Fig. 3,) and on the knob corresponding lugs, 2', are made, which, when the collar is against the knob, stand within the notches h, and thereby couple the knob and collar, so that when the knob is turned the collar will be turned with it. Upon the inside of the collar H, and extendingfroin the shoulder e rearward, is a longitudinal rib, Z. (See Figs. 4 and 6.) In the forward end of the sleeve D is a corresponding longitudinal slot, on. The depth of the slot m is such with relation to the rib Z that when the collar is against the knob, as seen in Fig. 2, there will be a space between the end of the rib Z and the rear end of the groove m equal in length to the length of the lugsz' on the knob. When the collar H is moved away from the knob, so as to clear the lugs i, the knob may be rotated independent of the collar.

In applying the knob to the door the spindle is first passed through the door in the usual manner, then the sleeve D set thereon. The knob is screwed onto the end of the spindle, the rib Z on the collar H comes into line with the groove m in the sleeve D; thenthe collar is moved longitudinally inward or "rearward, the rib entering the groove min the sleeve D, as indicated in broken lines, Fig. 1, and which movement of the sleeve frees the knob from the collar. Held in this condition the knob is screwed on until the inner end of its shank abuts against the bottom of the recess in the sleeve, as seen in Figs. 1 and 2, and so as to bring the inner end of the sleeve to a bearing in the rose. This is the proper position for the knob. The collar is now released and permitted to move forward under the action of its spring toward the knob, and when the lugs on the knob come into line with the notches inthe collar, the collar will spring outward and engage the logs on theknob; but in so doing the rib Z still remains within the groove in in the sleeve, as seen in Figs. 1 and 2. This leaves the sleeve engaged with the collar, and the collar with the knob, so that if the knob be turned the sleeve must turn with it, and because the interior of the sleeve corresponds to the angular shape of the spindle, the spindle must also turn with the knob.

To remove the knob when occasion may require, force the collar H rearward into the po sition indicated in broken lines, Fig. 1, so as to disengage it from the knob; then the knob may be unscrewed from the spindle.

I have represented the knob-shank as con structed with lugs and the end of the collar with corresponding recesses. This order may be reversed, it only being essential that there shall be some means of coupling between the shank, a collar arranged upon the shank of 5 the knob and concentric therewith, the knob and the collar, the one constructed with a lug,

t, and the other with corresponding notch, h,

the rear end of the said collar recessed to pass onto the outer end of the sleeve, the said col lar provided with a longitudinal rib, Z, upon its inside, and the sleeve constructed with a corresponding groove, m, and aspriug around the shank of the knob, one end arranged to take a bearing upon the shankits 7 other end against the collar, and so as to force the collar toward the knob, substantially as described.

H. CLARK FORD, War/r12 A. RIDDLE. 

